Segmented mirror, manufacturing and alignment tolerances (SMMAT)

Details Segmented mirror, manufacturing and alignment tolerances (SMMAT) Segmented mirror, manufacturing and alignment tolerances (SMMAT)

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1114..387m&link_type=abstract

IN: Active telescope systems; Proceedings of the Meeting, Orlando, FL, Mar. 28-31, 1989 (A90-30852 12-74). Bellingham, WA, Socie

Computer Science

Performance

Alignment, Large Deployable Reflector, Mirrors, Systems Engineering, Telescopes, Aberration, Error Analysis, Fortran, Segments, Test Equipment, Tolerances (Mechanics)

Scientific paper

An attempt is made to define surface errors, and hence wavelength aberrations or optical path differences, due to fabrication and alignment errors of mirror segments. A FORTRAN routine is written to help to understand the relationship between system performance (Strehl ratio, etc.) and manufacturing and alignment errors for Precision Segmented Reflectors and Large Deployable Reflector. The power of having compensation parameters such as piston and tilt responding to errors in position or figure is demonstrated. Compensation can improve performance by two orders of magnitude.

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